The Aeronomy of Ice in the Mesosphere (AIM) satellite is a NASA mission on which NTNU is a co-investigator. It is the first satellite mission dedicated to the study of these clouds at the edge of space in order to understand what creates them, their variability and their possible connection to climate change.

At NTNU we are exploring how solar activity changes the atmospheric composition and dynamics in the vicinity of the NLC, and how this affects their formation. To do this, we combine the satellite measurements with the ground-based, remote-sensing observations of ozone and nitric oxide that we are making at Troll Station, Antarctica, in conjunction with the Norwegian Polar Institute and the British Antarctic Survey. This gives us a threedimensional picture of the atmospheric composition and the wave motions that impact the formation of NLC. By observing over a range of solar and auroral activity, we hope to see if these solar effects can enhance or mask the effects of global climate change on NLC.

The All-Sky Interferometric Meteor Radar (SKiYMET) is a scientific instrument used for observing meteors and man-made re-entrant objects as they enter the Earth's atmosphere. The meteor radar has applications in a wide variety of areas including meteor astronomy, atmospheric physics, space research, space weather, space debris studies. Skiymet meteor radar and the measurement

Department of Physics NTNU, measuring spectral and total solar radiation in the ultraviolet and infrared region. The instruments are located on the roof of Realfagbygget NTNU. Today's UV index (Statens strålevern) Click on the name of Trondheim at the map.